<!doctype html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            text-align: center;
            margin-top: 100px;
        }
        form {
            display: inline-block;
            margin: auto;
            width: 300px;
        }
        input[type="password"] {
            width: 100%;
            padding: 10px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 4px;
        }
        input[type="submit"] {
            width: 100%;
            padding: 10px;
            background-color: #4CAF50;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }
        input[type="submit"]:hover {
            background-color: #45a049;
        }
    </style>
</head>
<body>
    <h1>请输入密码</h1>
    <form method="post" action="/login">
        <input type="password" name="password" placeholder="密码" required>
        <input type="submit" value="登录">
    </form>
</body>
</html>
